After hiring a lawyer, the file is in the public security bureau. How many times can the lawyer see the client? Can a lawyer read the case file directly? What is the role of a lawyer?

What you are talking about is the work content of lawyers in the stage of public security investigation, which is one of the three stages of criminal cases. At this stage, the interview with the suspect is unrestricted, but at this stage, the lawyer's interview must be approved by the public security organ and accompanied by the police (this illegal act will be corrected in the new amendment to the Criminal Procedure Law). At this stage, the lawyer cannot see the case file. What lawyers have to do is to meet with criminal suspects, provide legal advice to criminal suspects, get bail pending trial, and represent their complaints and accusations. In fact, in front of the public security organs, lawyers are of little use, and some suspects dare not say or cannot say things. At present, in criminal cases, lawyers have no right to be present, and interviews are restricted, which simply does not play their due role.